(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
  /**
   * 默认配置
   *
   * @author 老雷<leizongmin@gmail.com>
   */
  
  var FilterCSS = require('cssfilter').FilterCSS;
  var getDefaultCSSWhiteList = require('cssfilter').getDefaultWhiteList;
  var _ = require('./util');
  
  // 默认白名单
  function getDefaultWhiteList () {
    return {
      a:      ['target', 'href', 'title'],
      abbr:   ['title'],
      address: [],
      area:   ['shape', 'coords', 'href', 'alt'],
      article: [],
      aside:  [],
      audio:  ['autoplay', 'controls', 'loop', 'preload', 'src'],
      b:      [],
      bdi:    ['dir'],
      bdo:    ['dir'],
      big:    [],
      blockquote: ['cite'],
      br:     [],
      caption: [],
      center: [],
      cite:   [],
      code:   [],
      col:    ['align', 'valign', 'span', 'width'],
      colgroup: ['align', 'valign', 'span', 'width'],
      dd:     [],
      del:    ['datetime'],
      details: ['open'],
      div:    [],
      dl:     [],
      dt:     [],
      em:     [],
      font:   ['color', 'size', 'face'],
      footer: [],
      h1:     [],
      h2:     [],
      h3:     [],
      h4:     [],
      h5:     [],
      h6:     [],
      header: [],
      hr:     [],
      i:      [],
      img:    ['src', 'alt', 'title', 'width', 'height'],
      ins:    ['datetime'],
      li:     [],
      mark:   [],
      nav:    [],
      ol:     [],
      p:      [],
      pre:    [],
      s:      [],
      section:[],
      small:  [],
      span:   [],
      sub:    [],
      sup:    [],
      strong: [],
      table:  ['width', 'border', 'align', 'valign'],
      tbody:  ['align', 'valign'],
      td:     ['width', 'rowspan', 'colspan', 'align', 'valign'],
      tfoot:  ['align', 'valign'],
      th:     ['width', 'rowspan', 'colspan', 'align', 'valign'],
      thead:  ['align', 'valign'],
      tr:     ['rowspan', 'align', 'valign'],
      tt:     [],
      u:      [],
      ul:     [],
      video:  ['autoplay', 'controls', 'loop', 'preload', 'src', 'height', 'width']
    };
  }
  
  // 默认CSS Filter
  var defaultCSSFilter = new FilterCSS();
  
  /**
   * 匹配到标签时的处理方法
   *
   * @param {String} tag
   * @param {String} html
   * @param {Object} options
   * @return {String}
   */
  function onTag (tag, html, options) {
    // do nothing
  }
  
  /**
   * 匹配到不在白名单上的标签时的处理方法
   *
   * @param {String} tag
   * @param {String} html
   * @param {Object} options
   * @return {String}
   */
  function onIgnoreTag (tag, html, options) {
    // do nothing
  }
  
  /**
   * 匹配到标签属性时的处理方法
   *
   * @param {String} tag
   * @param {String} name
   * @param {String} value
   * @return {String}
   */
  function onTagAttr (tag, name, value) {
    // do nothing
  }
  
  /**
   * 匹配到不在白名单上的标签属性时的处理方法
   *
   * @param {String} tag
   * @param {String} name
   * @param {String} value
   * @return {String}
   */
  function onIgnoreTagAttr (tag, name, value) {
    // do nothing
  }
  
  /**
   * HTML转义
   *
   * @param {String} html
   */
  function escapeHtml (html) {
    return html.replace(REGEXP_LT, '&lt;').replace(REGEXP_GT, '&gt;');
  }
  
  /**
   * 安全的标签属性值
   *
   * @param {String} tag
   * @param {String} name
   * @param {String} value
   * @param {Object} cssFilter
   * @return {String}
   */
  function safeAttrValue (tag, name, value, cssFilter) {
    // 转换为友好的属性值，再做判断
    value = friendlyAttrValue(value);
  
    if (name === 'href' || name === 'src') {
      // 过滤 href 和 src 属性
      // 仅允许 http:// | https:// | mailto: | / | # 开头的地址
      value = _.trim(value);
      if (value === '#') return '#';
      if (!(value.substr(0, 7) === 'http://' ||
            value.substr(0, 6) === 'ftp://' ||
           value.substr(0, 8) === 'https://' ||
           value.substr(0, 7) === 'mailto:' ||
           value.substr(0, 4) === 'tel:' ||
           value[0] === '#' ||
           value[0] === '/')) {
        return '';
      }
    } else if (name === 'background') {
      // 过滤 background 属性 （这个xss漏洞较老了，可能已经不适用）
      // javascript:
      REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
      if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
        return '';
      }
    } else if (name === 'style') {
      // /*注释*/
      /*REGEXP_DEFAULT_ON_TAG_ATTR_3.lastIndex = 0;
      if (REGEXP_DEFAULT_ON_TAG_ATTR_3.test(value)) {
        return '';
      }*/
      // expression()
      REGEXP_DEFAULT_ON_TAG_ATTR_7.lastIndex = 0;
      if (REGEXP_DEFAULT_ON_TAG_ATTR_7.test(value)) {
        return '';
      }
      // url()
      REGEXP_DEFAULT_ON_TAG_ATTR_8.lastIndex = 0;
      if (REGEXP_DEFAULT_ON_TAG_ATTR_8.test(value)) {
        REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
        if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
          return '';
        }
      }
      if (cssFilter !== false) {
        cssFilter = cssFilter || defaultCSSFilter;
        value = cssFilter.process(value);
      }
    }
  
    // 输出时需要转义<>"
    value = escapeAttrValue(value);
    return value;
  }
  
  // 正则表达式
  var REGEXP_LT = /</g;
  var REGEXP_GT = />/g;
  var REGEXP_QUOTE = /"/g;
  var REGEXP_QUOTE_2 = /&quot;/g;
  var REGEXP_ATTR_VALUE_1 = /&#([a-zA-Z0-9]*);?/img;
  var REGEXP_ATTR_VALUE_COLON = /&colon;?/img;
  var REGEXP_ATTR_VALUE_NEWLINE = /&newline;?/img;
  var REGEXP_DEFAULT_ON_TAG_ATTR_3 = /\/\*|\*\//mg;
  var REGEXP_DEFAULT_ON_TAG_ATTR_4 = /((j\s*a\s*v\s*a|v\s*b|l\s*i\s*v\s*e)\s*s\s*c\s*r\s*i\s*p\s*t\s*|m\s*o\s*c\s*h\s*a)\:/ig;
  var REGEXP_DEFAULT_ON_TAG_ATTR_5 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:/ig;
  var REGEXP_DEFAULT_ON_TAG_ATTR_6 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:\s*image\//ig;
  var REGEXP_DEFAULT_ON_TAG_ATTR_7 = /e\s*x\s*p\s*r\s*e\s*s\s*s\s*i\s*o\s*n\s*\(.*/ig;
  var REGEXP_DEFAULT_ON_TAG_ATTR_8 = /u\s*r\s*l\s*\(.*/ig;
  
  /**
   * 对双引号进行转义
   *
   * @param {String} str
   * @return {String} str
   */
  function escapeQuote (str) {
    return str.replace(REGEXP_QUOTE, '&quot;');
  }
  
  /**
   * 对双引号进行转义
   *
   * @param {String} str
   * @return {String} str
   */
  function unescapeQuote (str) {
    return str.replace(REGEXP_QUOTE_2, '"');
  }
  
  /**
   * 对html实体编码进行转义
   *
   * @param {String} str
   * @return {String}
   */
  function escapeHtmlEntities (str) {
    return str.replace(REGEXP_ATTR_VALUE_1, function replaceUnicode (str, code) {
      return (code[0] === 'x' || code[0] === 'X')
              ? String.fromCharCode(parseInt(code.substr(1), 16))
              : String.fromCharCode(parseInt(code, 10));
    });
  }
  
  /**
   * 对html5新增的危险实体编码进行转义
   *
   * @param {String} str
   * @return {String}
   */
  function escapeDangerHtml5Entities (str) {
    return str.replace(REGEXP_ATTR_VALUE_COLON, ':')
              .replace(REGEXP_ATTR_VALUE_NEWLINE, ' ');
  }
  
  /**
   * 清除不可见字符
   *
   * @param {String} str
   * @return {String}
   */
  function clearNonPrintableCharacter (str) {
    var str2 = '';
    for (var i = 0, len = str.length; i < len; i++) {
      str2 += str.charCodeAt(i) < 32 ? ' ' : str.charAt(i);
    }
    return _.trim(str2);
  }
  
  /**
   * 将标签的属性值转换成一般字符，便于分析
   *
   * @param {String} str
   * @return {String}
   */
  function friendlyAttrValue (str) {
    str = unescapeQuote(str);             // 双引号
    str = escapeHtmlEntities(str);         // 转换HTML实体编码
    str = escapeDangerHtml5Entities(str);  // 转换危险的HTML5新增实体编码
    str = clearNonPrintableCharacter(str); // 清除不可见字符
    return str;
  }
  
  /**
   * 转义用于输出的标签属性值
   *
   * @param {String} str
   * @return {String}
   */
  function escapeAttrValue (str) {
    str = escapeQuote(str);
    str = escapeHtml(str);
    return str;
  }
  
  /**
   * 去掉不在白名单中的标签onIgnoreTag处理方法
   */
  function onIgnoreTagStripAll () {
    return '';
  }
  
  /**
   * 删除标签体
   *
   * @param {array} tags 要删除的标签列表
   * @param {function} next 对不在列表中的标签的处理函数，可选
   */
  function StripTagBody (tags, next) {
    if (typeof(next) !== 'function') {
      next = function () {};
    }
  
    var isRemoveAllTag = !Array.isArray(tags);
    function isRemoveTag (tag) {
      if (isRemoveAllTag) return true;
      return (_.indexOf(tags, tag) !== -1);
    }
  
    var removeList = [];   // 要删除的位置范围列表
    var posStart = false;  // 当前标签开始位置
  
    return {
      onIgnoreTag: function (tag, html, options) {
        if (isRemoveTag(tag)) {
          if (options.isClosing) {
            var ret = '[/removed]';
            var end = options.position + ret.length;
            removeList.push([posStart !== false ? posStart : options.position, end]);
            posStart = false;
            return ret;
          } else {
            if (!posStart) {
              posStart = options.position;
            }
            return '[removed]';
          }
        } else {
          return next(tag, html, options);
        }
      },
      remove: function (html) {
        var rethtml = '';
        var lastPos = 0;
        _.forEach(removeList, function (pos) {
          rethtml += html.slice(lastPos, pos[0]);
          lastPos = pos[1];
        });
        rethtml += html.slice(lastPos);
        return rethtml;
      }
    };
  }
  
  /**
   * 去除备注标签
   *
   * @param {String} html
   * @return {String}
   */
  function stripCommentTag (html) {
    return html.replace(STRIP_COMMENT_TAG_REGEXP, '');
  }
  var STRIP_COMMENT_TAG_REGEXP = /<!--[\s\S]*?-->/g;
  
  /**
   * 去除不可见字符
   *
   * @param {String} html
   * @return {String}
   */
  function stripBlankChar (html) {
    var chars = html.split('');
    chars = chars.filter(function (char) {
      var c = char.charCodeAt(0);
      if (c === 127) return false;
      if (c <= 31) {
        if (c === 10 || c === 13) return true;
        return false;
      }
      return true;
    });
    return chars.join('');
  }
  
  
  exports.whiteList = getDefaultWhiteList();
  exports.getDefaultWhiteList = getDefaultWhiteList;
  exports.onTag = onTag;
  exports.onIgnoreTag = onIgnoreTag;
  exports.onTagAttr = onTagAttr;
  exports.onIgnoreTagAttr = onIgnoreTagAttr;
  exports.safeAttrValue = safeAttrValue;
  exports.escapeHtml = escapeHtml;
  exports.escapeQuote = escapeQuote;
  exports.unescapeQuote = unescapeQuote;
  exports.escapeHtmlEntities = escapeHtmlEntities;
  exports.escapeDangerHtml5Entities = escapeDangerHtml5Entities;
  exports.clearNonPrintableCharacter = clearNonPrintableCharacter;
  exports.friendlyAttrValue = friendlyAttrValue;
  exports.escapeAttrValue = escapeAttrValue;
  exports.onIgnoreTagStripAll = onIgnoreTagStripAll;
  exports.StripTagBody = StripTagBody;
  exports.stripCommentTag = stripCommentTag;
  exports.stripBlankChar = stripBlankChar;
  exports.cssFilter = defaultCSSFilter;
  exports.getDefaultCSSWhiteList = getDefaultCSSWhiteList;
  
  },{"./util":4,"cssfilter":8}],2:[function(require,module,exports){
  /**
   * 模块入口
   *
   * @author 老雷<leizongmin@gmail.com>
   */
  
  var DEFAULT = require('./default');
  var parser = require('./parser');
  var FilterXSS = require('./xss');
  
  
  /**
   * XSS过滤
   *
   * @param {String} html 要过滤的HTML代码
   * @param {Object} options 选项：whiteList, onTag, onTagAttr, onIgnoreTag, onIgnoreTagAttr, safeAttrValue, escapeHtml
   * @return {String}
   */
  function filterXSS (html, options) {
    var xss = new FilterXSS(options);
    return xss.process(html);
  }
  
  
  // 输出
  exports = module.exports = filterXSS;
  exports.FilterXSS = FilterXSS;
  for (var i in DEFAULT) exports[i] = DEFAULT[i];
  for (var i in parser) exports[i] = parser[i];
  
  
  // 在浏览器端使用
  if (typeof window !== 'undefined') {
    window.filterXSS = module.exports;
  }
  
  },{"./default":1,"./parser":3,"./xss":5}],3:[function(require,module,exports){
  /**
   * 简单 HTML Parser
   *
   * @author 老雷<leizongmin@gmail.com>
   */
  
  var _ = require('./util');
  
  /**
   * 获取标签的名称
   *
   * @param {String} html 如：'<a hef="#">'
   * @return {String}
   */
  function getTagName (html) {
    var i = _.spaceIndex(html);
    if (i === -1) {
      var tagName = html.slice(1, -1);
    } else {
      var tagName = html.slice(1, i + 1);
    }
    tagName = _.trim(tagName).toLowerCase();
    if (tagName.slice(0, 1) === '/') tagName = tagName.slice(1);
    if (tagName.slice(-1) === '/') tagName = tagName.slice(0, -1);
    return tagName;
  }
  
  /**
   * 是否为闭合标签
   *
   * @param {String} html 如：'<a hef="#">'
   * @return {Boolean}
   */
  function isClosing (html) {
    return (html.slice(0, 2) === '</');
  }
  
  /**
   * 分析HTML代码，调用相应的函数处理，返回处理后的HTML
   *
   * @param {String} html
   * @param {Function} onTag 处理标签的函数
   *   参数格式： function (sourcePosition, position, tag, html, isClosing)
   * @param {Function} escapeHtml 对HTML进行转义的函数
   * @return {String}
   */
  function parseTag (html, onTag, escapeHtml) {
    'user strict';
  
    var rethtml = '';        // 待返回的HTML
    var lastPos = 0;         // 上一个标签结束位置
    var tagStart = false;    // 当前标签开始位置
    var quoteStart = false;  // 引号开始位置
    var currentPos = 0;      // 当前位置
    var len = html.length;   // HTML长度
    var currentHtml = '';    // 当前标签的HTML代码
    var currentTagName = ''; // 当前标签的名称
  
    // 逐个分析字符
    for (currentPos = 0; currentPos < len; currentPos++) {
      var c = html.charAt(currentPos);
      if (tagStart === false) {
        if (c === '<') {
          tagStart = currentPos;
          continue;
        }
      } else {
        if (quoteStart === false) {
          if (c === '<') {
            rethtml += escapeHtml(html.slice(lastPos, currentPos));
            tagStart = currentPos;
            lastPos = currentPos;
            continue;
          }
          if (c === '>') {
            rethtml += escapeHtml(html.slice(lastPos, tagStart));
            currentHtml = html.slice(tagStart, currentPos + 1);
            currentTagName = getTagName(currentHtml);
            rethtml += onTag(tagStart,
                             rethtml.length,
                             currentTagName,
                             currentHtml,
                             isClosing(currentHtml));
            lastPos = currentPos + 1;
            tagStart = false;
            continue;
          }
          // HTML标签内的引号仅当前一个字符是等于号时才有效
          if ((c === '"' || c === "'") && html.charAt(currentPos - 1) === '=') {
            quoteStart = c;
            continue;
          }
        } else {
          if (c === quoteStart) {
            quoteStart = false;
            continue;
          }
        }
      }
    }
    if (lastPos < html.length) {
      rethtml += escapeHtml(html.substr(lastPos));
    }
  
    return rethtml;
  }
  
  // 不符合属性名称规则的正则表达式
  var REGEXP_ATTR_NAME = /[^a-zA-Z0-9_:\.\-]/img;
  
  /**
   * 分析标签HTML代码，调用相应的函数处理，返回HTML
   *
   * @param {String} html 如标签'<a href="#" target="_blank">' 则为 'href="#" target="_blank"'
   * @param {Function} onAttr 处理属性值的函数
   *   函数格式： function (name, value)
   * @return {String}
   */
  function parseAttr (html, onAttr) {
    'user strict';
  
    var lastPos = 0;        // 当前位置
    var retAttrs = [];      // 待返回的属性列表
    var tmpName = false;    // 临时属性名称
    var len = html.length;  // HTML代码长度
  
    function addAttr (name, value) {
      name = _.trim(name);
      name = name.replace(REGEXP_ATTR_NAME, '').toLowerCase();
      if (name.length < 1) return;
      var ret = onAttr(name, value || '');
      if (ret) retAttrs.push(ret);
    };
  
    // 逐个分析字符
    for (var i = 0; i < len; i++) {
      var c = html.charAt(i);
      var v, j;
      if (tmpName === false && c === '=') {
        tmpName = html.slice(lastPos, i);
        lastPos = i + 1;
        continue;
      }
      if (tmpName !== false) {
        // HTML标签内的引号仅当前一个字符是等于号时才有效
        if (i === lastPos && (c === '"' || c === "'") && html.charAt(i - 1) === '=') {
          j = html.indexOf(c, i + 1);
          if (j === -1) {
            break;
          } else {
            v = _.trim(html.slice(lastPos + 1, j));
            addAttr(tmpName, v);
            tmpName = false;
            i = j;
            lastPos = i + 1;
            continue;
          }
        }
      }
      if (/\s|\n|\t/.test(c)) {
        html = html.replace(/\s|\n|\t/g, ' ');
        if (tmpName === false) {
          j = findNextEqual(html, i);
          if (j === -1) {
            v = _.trim(html.slice(lastPos, i));
            addAttr(v);
            tmpName = false;
            lastPos = i + 1;
            continue;
          } else {
            i = j - 1;
            continue;
          }
        } else {
          j = findBeforeEqual(html, i - 1);
          if (j === -1) {
            v = _.trim(html.slice(lastPos, i));
            v = stripQuoteWrap(v);
            addAttr(tmpName, v);
            tmpName = false;
            lastPos = i + 1;
            continue;
          } else {
            continue;
          }
        }
      }
    }
  
    if (lastPos < html.length) {
      if (tmpName === false) {
        addAttr(html.slice(lastPos));
      } else {
        addAttr(tmpName, stripQuoteWrap(_.trim(html.slice(lastPos))));
      }
    }
  
    return _.trim(retAttrs.join(' '));
  }
  
  function findNextEqual (str, i) {
    for (; i < str.length; i++) {
      var c = str[i];
      if (c === ' ') continue;
      if (c === '=') return i;
      return -1;
    }
  }
  
  function findBeforeEqual (str, i) {
    for (; i > 0; i--) {
      var c = str[i];
      if (c === ' ') continue;
      if (c === '=') return i;
      return -1;
    }
  }
  
  function isQuoteWrapString (text) {
    if ((text[0] === '"' && text[text.length - 1] === '"') ||
        (text[0] === '\'' && text[text.length - 1] === '\'')) {
      return true;
    } else {
      return false;
    }
  };
  
  function stripQuoteWrap (text) {
    if (isQuoteWrapString(text)) {
      return text.substr(1, text.length - 2);
    } else {
      return text;
    }
  };
  
  
  exports.parseTag = parseTag;
  exports.parseAttr = parseAttr;
  
  },{"./util":4}],4:[function(require,module,exports){
  module.exports = {
    indexOf: function (arr, item) {
      var i, j;
      if (Array.prototype.indexOf) {
        return arr.indexOf(item);
      }
      for (i = 0, j = arr.length; i < j; i++) {
        if (arr[i] === item) {
          return i;
        }
      }
      return -1;
    },
    forEach: function (arr, fn, scope) {
      var i, j;
      if (Array.prototype.forEach) {
        return arr.forEach(fn, scope);
      }
      for (i = 0, j = arr.length; i < j; i++) {
        fn.call(scope, arr[i], i, arr);
      }
    },
    trim: function (str) {
      if (String.prototype.trim) {
        return str.trim();
      }
      return str.replace(/(^\s*)|(\s*$)/g, '');
    },
    spaceIndex: function (str) {
        var reg = /\s|\n|\t/;
        var match = reg.exec(str);
        return match ? match.index : -1;
    }
  };
  
  },{}],5:[function(require,module,exports){
  /**
   * 过滤XSS
   *
   * @author 老雷<leizongmin@gmail.com>
   */
  
  var FilterCSS = require('cssfilter').FilterCSS;
  var DEFAULT = require('./default');
  var parser = require('./parser');
  var parseTag = parser.parseTag;
  var parseAttr = parser.parseAttr;
  var _ = require('./util');
  
  
  /**
   * 返回值是否为空
   *
   * @param {Object} obj
   * @return {Boolean}
   */
  function isNull (obj) {
    return (obj === undefined || obj === null);
  }
  
  /**
   * 取标签内的属性列表字符串
   *
   * @param {String} html
   * @return {Object}
   *   - {String} html
   *   - {Boolean} closing
   */
  function getAttrs (html) {
    var i = _.spaceIndex(html);
    if (i === -1) {
      return {
        html:    '',
        closing: (html[html.length - 2] === '/')
      };
    }
    html = _.trim(html.slice(i + 1, -1));
    var isClosing = (html[html.length - 1] === '/');
    if (isClosing) html = _.trim(html.slice(0, -1));
    return {
      html:    html,
      closing: isClosing
    };
  }
  
  /**
   * 浅拷贝对象
   *
   * @param {Object} obj
   * @return {Object}
   */
  function shallowCopyObject (obj) {
    var ret = {};
    for (var i in obj) {
      ret[i] = obj[i];
    }
    return ret;
  }
  
  /**
   * XSS过滤对象
   *
   * @param {Object} options
   *   选项：whiteList, onTag, onTagAttr, onIgnoreTag,
   *        onIgnoreTagAttr, safeAttrValue, escapeHtml
   *        stripIgnoreTagBody, allowCommentTag, stripBlankChar
   *        css{whiteList, onAttr, onIgnoreAttr} css=false表示禁用cssfilter
   */
  function FilterXSS (options) {
    options = shallowCopyObject(options || {});
  
    if (options.stripIgnoreTag) {
      if (options.onIgnoreTag) {
        console.error('Notes: cannot use these two options "stripIgnoreTag" and "onIgnoreTag" at the same time');
      }
      options.onIgnoreTag = DEFAULT.onIgnoreTagStripAll;
    }
  
    options.whiteList = options.whiteList || DEFAULT.whiteList;
    options.onTag = options.onTag || DEFAULT.onTag;
    options.onTagAttr = options.onTagAttr || DEFAULT.onTagAttr;
    options.onIgnoreTag = options.onIgnoreTag || DEFAULT.onIgnoreTag;
    options.onIgnoreTagAttr = options.onIgnoreTagAttr || DEFAULT.onIgnoreTagAttr;
    options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
    options.escapeHtml = options.escapeHtml || DEFAULT.escapeHtml;
    this.options = options;
  
    if (options.css === false) {
      this.cssFilter = false;
    } else {
      options.css = options.css || {};
      this.cssFilter = new FilterCSS(options.css);
    }
  }
  
  /**
   * 开始处理
   *
   * @param {String} html
   * @return {String}
   */
  FilterXSS.prototype.process = function (html) {
    // 兼容各种奇葩输入
    html = html || '';
    html = html.toString();
    if (!html) return '';
  
    var me = this;
    var options = me.options;
    var whiteList = options.whiteList;
    var onTag = options.onTag;
    var onIgnoreTag = options.onIgnoreTag;
    var onTagAttr = options.onTagAttr;
    var onIgnoreTagAttr = options.onIgnoreTagAttr;
    var safeAttrValue = options.safeAttrValue;
    var escapeHtml = options.escapeHtml;
    var cssFilter = me.cssFilter;
  
    // 是否清除不可见字符
    if (options.stripBlankChar) {
      html = DEFAULT.stripBlankChar(html);
    }
  
    // 是否禁止备注标签
    if (!options.allowCommentTag) {
      html = DEFAULT.stripCommentTag(html);
    }
  
    // 如果开启了stripIgnoreTagBody
    var stripIgnoreTagBody = false;
    if (options.stripIgnoreTagBody) {
      var stripIgnoreTagBody = DEFAULT.StripTagBody(options.stripIgnoreTagBody, onIgnoreTag);
      onIgnoreTag = stripIgnoreTagBody.onIgnoreTag;
    }
  
    var retHtml = parseTag(html, function (sourcePosition, position, tag, html, isClosing) {
      var info = {
        sourcePosition: sourcePosition,
        position:       position,
        isClosing:      isClosing,
        isWhite:        (tag in whiteList)
      };
  
      // 调用onTag处理
      var ret = onTag(tag, html, info);
      if (!isNull(ret)) return ret;
  
      // 默认标签处理方法
      if (info.isWhite) {
        // 白名单标签，解析标签属性
        // 如果是闭合标签，则不需要解析属性
        if (info.isClosing) {
          return '</' + tag + '>';
        }
  
        var attrs = getAttrs(html);
        var whiteAttrList = whiteList[tag];
        var attrsHtml = parseAttr(attrs.html, function (name, value) {
  
          // 调用onTagAttr处理
          var isWhiteAttr = (_.indexOf(whiteAttrList, name) !== -1);
          var ret = onTagAttr(tag, name, value, isWhiteAttr);
          if (!isNull(ret)) return ret;
  
          // 默认的属性处理方法
          if (isWhiteAttr) {
            // 白名单属性，调用safeAttrValue过滤属性值
            value = safeAttrValue(tag, name, value, cssFilter);
            if (value) {
              return name + '="' + value + '"';
            } else {
              return name;
            }
          } else {
            // 非白名单属性，调用onIgnoreTagAttr处理
            var ret = onIgnoreTagAttr(tag, name, value, isWhiteAttr);
            if (!isNull(ret)) return ret;
            return;
          }
        });
  
        // 构造新的标签代码
        var html = '<' + tag;
        if (attrsHtml) html += ' ' + attrsHtml;
        if (attrs.closing) html += ' /';
        html += '>';
        return html;
  
      } else {
        // 非白名单标签，调用onIgnoreTag处理
        var ret = onIgnoreTag(tag, html, info);
        if (!isNull(ret)) return ret;
        return escapeHtml(html);
      }
  
    }, escapeHtml);
  
    // 如果开启了stripIgnoreTagBody，需要对结果再进行处理
    if (stripIgnoreTagBody) {
      retHtml = stripIgnoreTagBody.remove(retHtml);
    }
  
    return retHtml;
  };
  
  
  module.exports = FilterXSS;
  
  },{"./default":1,"./parser":3,"./util":4,"cssfilter":8}],6:[function(require,module,exports){
  /**
   * cssfilter
   *
   * @author 老雷<leizongmin@gmail.com>
   */
  
  var DEFAULT = require('./default');
  var parseStyle = require('./parser');
  var _ = require('./util');
  
  
  /**
   * 返回值是否为空
   *
   * @param {Object} obj
   * @return {Boolean}
   */
  function isNull (obj) {
    return (obj === undefined || obj === null);
  }
  
  /**
   * 浅拷贝对象
   *
   * @param {Object} obj
   * @return {Object}
   */
  function shallowCopyObject (obj) {
    var ret = {};
    for (var i in obj) {
      ret[i] = obj[i];
    }
    return ret;
  }
  
  /**
   * 创建CSS过滤器
   *
   * @param {Object} options
   *   - {Object} whiteList
   *   - {Function} onAttr
   *   - {Function} onIgnoreAttr
   *   - {Function} safeAttrValue
   */
  function FilterCSS (options) {
    options = shallowCopyObject(options || {});
    options.whiteList = options.whiteList || DEFAULT.whiteList;
    options.onAttr = options.onAttr || DEFAULT.onAttr;
    options.onIgnoreAttr = options.onIgnoreAttr || DEFAULT.onIgnoreAttr;
    options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
    this.options = options;
  }
  
  FilterCSS.prototype.process = function (css) {
    // 兼容各种奇葩输入
    css = css || '';
    css = css.toString();
    if (!css) return '';
  
    var me = this;
    var options = me.options;
    var whiteList = options.whiteList;
    var onAttr = options.onAttr;
    var onIgnoreAttr = options.onIgnoreAttr;
    var safeAttrValue = options.safeAttrValue;
  
    var retCSS = parseStyle(css, function (sourcePosition, position, name, value, source) {
  
      var check = whiteList[name];
      var isWhite = false;
      if (check === true) isWhite = check;
      else if (typeof check === 'function') isWhite = check(value);
      else if (check instanceof RegExp) isWhite = check.test(value);
      if (isWhite !== true) isWhite = false;
  
      // 如果过滤后 value 为空则直接忽略
      value = safeAttrValue(name, value);
      if (!value) return;
  
      var opts = {
        position: position,
        sourcePosition: sourcePosition,
        source: source,
        isWhite: isWhite
      };
  
      if (isWhite) {
  
        var ret = onAttr(name, value, opts);
        if (isNull(ret)) {
          return name + ':' + value;
        } else {
          return ret;
        }
  
      } else {
  
        var ret = onIgnoreAttr(name, value, opts);
        if (!isNull(ret)) {
          return ret;
        }
  
      }
    });
  
    return retCSS;
  };
  
  
  module.exports = FilterCSS;
  
  },{"./default":7,"./parser":9,"./util":10}],7:[function(require,module,exports){
  /**
   * cssfilter
   *
   * @author 老雷<leizongmin@gmail.com>
   */
  
  function getDefaultWhiteList () {
    // 白名单值说明：
    // true: 允许该属性
    // Function: function (val) { } 返回true表示允许该属性，其他值均表示不允许
    // RegExp: regexp.test(val) 返回true表示允许该属性，其他值均表示不允许
    // 除上面列出的值外均表示不允许
    var whiteList = {};
  
    whiteList['align-content'] = false; // default: auto
    whiteList['align-items'] = false; // default: auto
    whiteList['align-self'] = false; // default: auto
    whiteList['alignment-adjust'] = false; // default: auto
    whiteList['alignment-baseline'] = false; // default: baseline
    whiteList['all'] = false; // default: depending on individual properties
    whiteList['anchor-point'] = false; // default: none
    whiteList['animation'] = false; // default: depending on individual properties
    whiteList['animation-delay'] = false; // default: 0
    whiteList['animation-direction'] = false; // default: normal
    whiteList['animation-duration'] = false; // default: 0
    whiteList['animation-fill-mode'] = false; // default: none
    whiteList['animation-iteration-count'] = false; // default: 1
    whiteList['animation-name'] = false; // default: none
    whiteList['animation-play-state'] = false; // default: running
    whiteList['animation-timing-function'] = false; // default: ease
    whiteList['azimuth'] = false; // default: center
    whiteList['backface-visibility'] = false; // default: visible
    whiteList['background'] = true; // default: depending on individual properties
    whiteList['background-attachment'] = true; // default: scroll
    whiteList['background-clip'] = true; // default: border-box
    whiteList['background-color'] = true; // default: transparent
    whiteList['background-image'] = true; // default: none
    whiteList['background-origin'] = true; // default: padding-box
    whiteList['background-position'] = true; // default: 0% 0%
    whiteList['background-repeat'] = true; // default: repeat
    whiteList['background-size'] = true; // default: auto
    whiteList['baseline-shift'] = false; // default: baseline
    whiteList['binding'] = false; // default: none
    whiteList['bleed'] = false; // default: 6pt
    whiteList['bookmark-label'] = false; // default: content()
    whiteList['bookmark-level'] = false; // default: none
    whiteList['bookmark-state'] = false; // default: open
    whiteList['border'] = true; // default: depending on individual properties
    whiteList['border-bottom'] = true; // default: depending on individual properties
    whiteList['border-bottom-color'] = true; // default: current color
    whiteList['border-bottom-left-radius'] = true; // default: 0
    whiteList['border-bottom-right-radius'] = true; // default: 0
    whiteList['border-bottom-style'] = true; // default: none
    whiteList['border-bottom-width'] = true; // default: medium
    whiteList['border-collapse'] = true; // default: separate
    whiteList['border-color'] = true; // default: depending on individual properties
    whiteList['border-image'] = true; // default: none
    whiteList['border-image-outset'] = true; // default: 0
    whiteList['border-image-repeat'] = true; // default: stretch
    whiteList['border-image-slice'] = true; // default: 100%
    whiteList['border-image-source'] = true; // default: none
    whiteList['border-image-width'] = true; // default: 1
    whiteList['border-left'] = true; // default: depending on individual properties
    whiteList['border-left-color'] = true; // default: current color
    whiteList['border-left-style'] = true; // default: none
    whiteList['border-left-width'] = true; // default: medium
    whiteList['border-radius'] = true; // default: 0
    whiteList['border-right'] = true; // default: depending on individual properties
    whiteList['border-right-color'] = true; // default: current color
    whiteList['border-right-style'] = true; // default: none
    whiteList['border-right-width'] = true; // default: medium
    whiteList['border-spacing'] = true; // default: 0
    whiteList['border-style'] = true; // default: depending on individual properties
    whiteList['border-top'] = true; // default: depending on individual properties
    whiteList['border-top-color'] = true; // default: current color
    whiteList['border-top-left-radius'] = true; // default: 0
    whiteList['border-top-right-radius'] = true; // default: 0
    whiteList['border-top-style'] = true; // default: none
    whiteList['border-top-width'] = true; // default: medium
    whiteList['border-width'] = true; // default: depending on individual properties
    whiteList['bottom'] = false; // default: auto
    whiteList['box-decoration-break'] = true; // default: slice
    whiteList['box-shadow'] = true; // default: none
    whiteList['box-sizing'] = true; // default: content-box
    whiteList['box-snap'] = true; // default: none
    whiteList['box-suppress'] = true; // default: show
    whiteList['break-after'] = true; // default: auto
    whiteList['break-before'] = true; // default: auto
    whiteList['break-inside'] = true; // default: auto
    whiteList['caption-side'] = false; // default: top
    whiteList['chains'] = false; // default: none
    whiteList['clear'] = true; // default: none
    whiteList['clip'] = false; // default: auto
    whiteList['clip-path'] = false; // default: none
    whiteList['clip-rule'] = false; // default: nonzero
    whiteList['color'] = true; // default: implementation dependent
    whiteList['color-interpolation-filters'] = true; // default: auto
    whiteList['column-count'] = false; // default: auto
    whiteList['column-fill'] = false; // default: balance
    whiteList['column-gap'] = false; // default: normal
    whiteList['column-rule'] = false; // default: depending on individual properties
    whiteList['column-rule-color'] = false; // default: current color
    whiteList['column-rule-style'] = false; // default: medium
    whiteList['column-rule-width'] = false; // default: medium
    whiteList['column-span'] = false; // default: none
    whiteList['column-width'] = false; // default: auto
    whiteList['columns'] = false; // default: depending on individual properties
    whiteList['contain'] = false; // default: none
    whiteList['content'] = false; // default: normal
    whiteList['counter-increment'] = false; // default: none
    whiteList['counter-reset'] = false; // default: none
    whiteList['counter-set'] = false; // default: none
    whiteList['crop'] = false; // default: auto
    whiteList['cue'] = false; // default: depending on individual properties
    whiteList['cue-after'] = false; // default: none
    whiteList['cue-before'] = false; // default: none
    whiteList['cursor'] = false; // default: auto
    whiteList['direction'] = false; // default: ltr
    whiteList['display'] = true; // default: depending on individual properties
    whiteList['display-inside'] = true; // default: auto
    whiteList['display-list'] = true; // default: none
    whiteList['display-outside'] = true; // default: inline-level
    whiteList['dominant-baseline'] = false; // default: auto
    whiteList['elevation'] = false; // default: level
    whiteList['empty-cells'] = false; // default: show
    whiteList['filter'] = false; // default: none
    whiteList['flex'] = false; // default: depending on individual properties
    whiteList['flex-basis'] = false; // default: auto
    whiteList['flex-direction'] = false; // default: row
    whiteList['flex-flow'] = false; // default: depending on individual properties
    whiteList['flex-grow'] = false; // default: 0
    whiteList['flex-shrink'] = false; // default: 1
    whiteList['flex-wrap'] = false; // default: nowrap
    whiteList['float'] = false; // default: none
    whiteList['float-offset'] = false; // default: 0 0
    whiteList['flood-color'] = false; // default: black
    whiteList['flood-opacity'] = false; // default: 1
    whiteList['flow-from'] = false; // default: none
    whiteList['flow-into'] = false; // default: none
    whiteList['font'] = true; // default: depending on individual properties
    whiteList['font-family'] = true; // default: implementation dependent
    whiteList['font-feature-settings'] = true; // default: normal
    whiteList['font-kerning'] = true; // default: auto
    whiteList['font-language-override'] = true; // default: normal
    whiteList['font-size'] = true; // default: medium
    whiteList['font-size-adjust'] = true; // default: none
    whiteList['font-stretch'] = true; // default: normal
    whiteList['font-style'] = true; // default: normal
    whiteList['font-synthesis'] = true; // default: weight style
    whiteList['font-variant'] = true; // default: normal
    whiteList['font-variant-alternates'] = true; // default: normal
    whiteList['font-variant-caps'] = true; // default: normal
    whiteList['font-variant-east-asian'] = true; // default: normal
    whiteList['font-variant-ligatures'] = true; // default: normal
    whiteList['font-variant-numeric'] = true; // default: normal
    whiteList['font-variant-position'] = true; // default: normal
    whiteList['font-weight'] = true; // default: normal
    whiteList['grid'] = false; // default: depending on individual properties
    whiteList['grid-area'] = false; // default: depending on individual properties
    whiteList['grid-auto-columns'] = false; // default: auto
    whiteList['grid-auto-flow'] = false; // default: none
    whiteList['grid-auto-rows'] = false; // default: auto
    whiteList['grid-column'] = false; // default: depending on individual properties
    whiteList['grid-column-end'] = false; // default: auto
    whiteList['grid-column-start'] = false; // default: auto
    whiteList['grid-row'] = false; // default: depending on individual properties
    whiteList['grid-row-end'] = false; // default: auto
    whiteList['grid-row-start'] = false; // default: auto
    whiteList['grid-template'] = false; // default: depending on individual properties
    whiteList['grid-template-areas'] = false; // default: none
    whiteList['grid-template-columns'] = false; // default: none
    whiteList['grid-template-rows'] = false; // default: none
    whiteList['hanging-punctuation'] = false; // default: none
    whiteList['height'] = true; // default: auto
    whiteList['hyphens'] = false; // default: manual
    whiteList['icon'] = false; // default: auto
    whiteList['image-orientation'] = false; // default: auto
    whiteList['image-resolution'] = false; // default: normal
    whiteList['ime-mode'] = false; // default: auto
    whiteList['initial-letters'] = false; // default: normal
    whiteList['inline-box-align'] = false; // default: last
    whiteList['justify-content'] = false; // default: auto
    whiteList['justify-items'] = false; // default: auto
    whiteList['justify-self'] = false; // default: auto
    whiteList['left'] = false; // default: auto
    whiteList['letter-spacing'] = true; // default: normal
    whiteList['lighting-color'] = true; // default: white
    whiteList['line-box-contain'] = false; // default: block inline replaced
    whiteList['line-break'] = false; // default: auto
    whiteList['line-grid'] = false; // default: match-parent
    whiteList['line-height'] = false; // default: normal
    whiteList['line-snap'] = false; // default: none
    whiteList['line-stacking'] = false; // default: depending on individual properties
    whiteList['line-stacking-ruby'] = false; // default: exclude-ruby
    whiteList['line-stacking-shift'] = false; // default: consider-shifts
    whiteList['line-stacking-strategy'] = false; // default: inline-line-height
    whiteList['list-style'] = true; // default: depending on individual properties
    whiteList['list-style-image'] = true; // default: none
    whiteList['list-style-position'] = true; // default: outside
    whiteList['list-style-type'] = true; // default: disc
    whiteList['margin'] = true; // default: depending on individual properties
    whiteList['margin-bottom'] = true; // default: 0
    whiteList['margin-left'] = true; // default: 0
    whiteList['margin-right'] = true; // default: 0
    whiteList['margin-top'] = true; // default: 0
    whiteList['marker-offset'] = false; // default: auto
    whiteList['marker-side'] = false; // default: list-item
    whiteList['marks'] = false; // default: none
    whiteList['mask'] = false; // default: border-box
    whiteList['mask-box'] = false; // default: see individual properties
    whiteList['mask-box-outset'] = false; // default: 0
    whiteList['mask-box-repeat'] = false; // default: stretch
    whiteList['mask-box-slice'] = false; // default: 0 fill
    whiteList['mask-box-source'] = false; // default: none
    whiteList['mask-box-width'] = false; // default: auto
    whiteList['mask-clip'] = false; // default: border-box
    whiteList['mask-image'] = false; // default: none
    whiteList['mask-origin'] = false; // default: border-box
    whiteList['mask-position'] = false; // default: center
    whiteList['mask-repeat'] = false; // default: no-repeat
    whiteList['mask-size'] = false; // default: border-box
    whiteList['mask-source-type'] = false; // default: auto
    whiteList['mask-type'] = false; // default: luminance
    whiteList['max-height'] = true; // default: none
    whiteList['max-lines'] = false; // default: none
    whiteList['max-width'] = true; // default: none
    whiteList['min-height'] = true; // default: 0
    whiteList['min-width'] = true; // default: 0
    whiteList['move-to'] = false; // default: normal
    whiteList['nav-down'] = false; // default: auto
    whiteList['nav-index'] = false; // default: auto
    whiteList['nav-left'] = false; // default: auto
    whiteList['nav-right'] = false; // default: auto
    whiteList['nav-up'] = false; // default: auto
    whiteList['object-fit'] = false; // default: fill
    whiteList['object-position'] = false; // default: 50% 50%
    whiteList['opacity'] = false; // default: 1
    whiteList['order'] = false; // default: 0
    whiteList['orphans'] = false; // default: 2
    whiteList['outline'] = false; // default: depending on individual properties
    whiteList['outline-color'] = false; // default: invert
    whiteList['outline-offset'] = false; // default: 0
    whiteList['outline-style'] = false; // default: none
    whiteList['outline-width'] = false; // default: medium
    whiteList['overflow'] = false; // default: depending on individual properties
    whiteList['overflow-wrap'] = false; // default: normal
    whiteList['overflow-x'] = false; // default: visible
    whiteList['overflow-y'] = false; // default: visible
    whiteList['padding'] = true; // default: depending on individual properties
    whiteList['padding-bottom'] = true; // default: 0
    whiteList['padding-left'] = true; // default: 0
    whiteList['padding-right'] = true; // default: 0
    whiteList['padding-top'] = true; // default: 0
    whiteList['page'] = false; // default: auto
    whiteList['page-break-after'] = false; // default: auto
    whiteList['page-break-before'] = false; // default: auto
    whiteList['page-break-inside'] = false; // default: auto
    whiteList['page-policy'] = false; // default: start
    whiteList['pause'] = false; // default: implementation dependent
    whiteList['pause-after'] = false; // default: implementation dependent
    whiteList['pause-before'] = false; // default: implementation dependent
    whiteList['perspective'] = false; // default: none
    whiteList['perspective-origin'] = false; // default: 50% 50%
    whiteList['pitch'] = false; // default: medium
    whiteList['pitch-range'] = false; // default: 50
    whiteList['play-during'] = false; // default: auto
    whiteList['position'] = false; // default: static
    whiteList['presentation-level'] = false; // default: 0
    whiteList['quotes'] = false; // default: text
    whiteList['region-fragment'] = false; // default: auto
    whiteList['resize'] = false; // default: none
    whiteList['rest'] = false; // default: depending on individual properties
    whiteList['rest-after'] = false; // default: none
    whiteList['rest-before'] = false; // default: none
    whiteList['richness'] = false; // default: 50
    whiteList['right'] = false; // default: auto
    whiteList['rotation'] = false; // default: 0
    whiteList['rotation-point'] = false; // default: 50% 50%
    whiteList['ruby-align'] = false; // default: auto
    whiteList['ruby-merge'] = false; // default: separate
    whiteList['ruby-position'] = false; // default: before
    whiteList['shape-image-threshold'] = false; // default: 0.0
    whiteList['shape-outside'] = false; // default: none
    whiteList['shape-margin'] = false; // default: 0
    whiteList['size'] = false; // default: auto
    whiteList['speak'] = false; // default: auto
    whiteList['speak-as'] = false; // default: normal
    whiteList['speak-header'] = false; // default: once
    whiteList['speak-numeral'] = false; // default: continuous
    whiteList['speak-punctuation'] = false; // default: none
    whiteList['speech-rate'] = false; // default: medium
    whiteList['stress'] = false; // default: 50
    whiteList['string-set'] = false; // default: none
    whiteList['tab-size'] = false; // default: 8
    whiteList['table-layout'] = false; // default: auto
    whiteList['text-align'] = true; // default: start
    whiteList['text-align-last'] = true; // default: auto
    whiteList['text-combine-upright'] = true; // default: none
    whiteList['text-decoration'] = true; // default: none
    whiteList['text-decoration-color'] = true; // default: currentColor
    whiteList['text-decoration-line'] = true; // default: none
    whiteList['text-decoration-skip'] = true; // default: objects
    whiteList['text-decoration-style'] = true; // default: solid
    whiteList['text-emphasis'] = true; // default: depending on individual properties
    whiteList['text-emphasis-color'] = true; // default: currentColor
    whiteList['text-emphasis-position'] = true; // default: over right
    whiteList['text-emphasis-style'] = true; // default: none
    whiteList['text-height'] = true; // default: auto
    whiteList['text-indent'] = true; // default: 0
    whiteList['text-justify'] = true; // default: auto
    whiteList['text-orientation'] = true; // default: mixed
    whiteList['text-overflow'] = true; // default: clip
    whiteList['text-shadow'] = true; // default: none
    whiteList['text-space-collapse'] = true; // default: collapse
    whiteList['text-transform'] = true; // default: none
    whiteList['text-underline-position'] = true; // default: auto
    whiteList['text-wrap'] = true; // default: normal
    whiteList['top'] = false; // default: auto
    whiteList['transform'] = false; // default: none
    whiteList['transform-origin'] = false; // default: 50% 50% 0
    whiteList['transform-style'] = false; // default: flat
    whiteList['transition'] = false; // default: depending on individual properties
    whiteList['transition-delay'] = false; // default: 0s
    whiteList['transition-duration'] = false; // default: 0s
    whiteList['transition-property'] = false; // default: all
    whiteList['transition-timing-function'] = false; // default: ease
    whiteList['unicode-bidi'] = false; // default: normal
    whiteList['vertical-align'] = false; // default: baseline
    whiteList['visibility'] = false; // default: visible
    whiteList['voice-balance'] = false; // default: center
    whiteList['voice-duration'] = false; // default: auto
    whiteList['voice-family'] = false; // default: implementation dependent
    whiteList['voice-pitch'] = false; // default: medium
    whiteList['voice-range'] = false; // default: medium
    whiteList['voice-rate'] = false; // default: normal
    whiteList['voice-stress'] = false; // default: normal
    whiteList['voice-volume'] = false; // default: medium
    whiteList['volume'] = false; // default: medium
    whiteList['white-space'] = false; // default: normal
    whiteList['widows'] = false; // default: 2
    whiteList['width'] = true; // default: auto
    whiteList['will-change'] = false; // default: auto
    whiteList['word-break'] = true; // default: normal
    whiteList['word-spacing'] = true; // default: normal
    whiteList['word-wrap'] = true; // default: normal
    whiteList['wrap-flow'] = false; // default: auto
    whiteList['wrap-through'] = false; // default: wrap
    whiteList['writing-mode'] = false; // default: horizontal-tb
    whiteList['z-index'] = false; // default: auto
  
    return whiteList;
  }
  
  
  /**
   * 匹配到白名单上的一个属性时
   *
   * @param {String} name
   * @param {String} value
   * @param {Object} options
   * @return {String}
   */
  function onAttr (name, value, options) {
    // do nothing
  }
  
  /**
   * 匹配到不在白名单上的一个属性时
   *
   * @param {String} name
   * @param {String} value
   * @param {Object} options
   * @return {String}
   */
  function onIgnoreAttr (name, value, options) {
    // do nothing
  }
  
  var REGEXP_URL_JAVASCRIPT = /javascript\s*\:/img;
  
  /**
   * 过滤属性值
   *
   * @param {String} name
   * @param {String} value
   * @return {String}
   */
  function safeAttrValue(name, value) {
    if (REGEXP_URL_JAVASCRIPT.test(value)) return '';
    return value;
  }
  
  
  exports.whiteList = getDefaultWhiteList();
  exports.getDefaultWhiteList = getDefaultWhiteList;
  exports.onAttr = onAttr;
  exports.onIgnoreAttr = onIgnoreAttr;
  exports.safeAttrValue = safeAttrValue;
  
  },{}],8:[function(require,module,exports){
  /**
   * cssfilter
   *
   * @author 老雷<leizongmin@gmail.com>
   */
  
  var DEFAULT = require('./default');
  var FilterCSS = require('./css');
  
  
  /**
   * XSS过滤
   *
   * @param {String} css 要过滤的CSS代码
   * @param {Object} options 选项：whiteList, onAttr, onIgnoreAttr
   * @return {String}
   */
  function filterCSS (html, options) {
    var xss = new FilterCSS(options);
    return xss.process(html);
  }
  
  
  // 输出
  exports = module.exports = filterCSS;
  exports.FilterCSS = FilterCSS;
  for (var i in DEFAULT) exports[i] = DEFAULT[i];
  
  // 在浏览器端使用
  if (typeof window !== 'undefined') {
    window.filterCSS = module.exports;
  }
  
  },{"./css":6,"./default":7}],9:[function(require,module,exports){
  /**
   * cssfilter
   *
   * @author 老雷<leizongmin@gmail.com>
   */
  
  var _ = require('./util');
  
  
  /**
   * 解析style
   *
   * @param {String} css
   * @param {Function} onAttr 处理属性的函数
   *   参数格式： function (sourcePosition, position, name, value, source)
   * @return {String}
   */
  function parseStyle (css, onAttr) {
    css = _.trimRight(css);
    if (css[css.length - 1] !== ';') css += ';';
    var cssLength = css.length;
    var isParenthesisOpen = false;
    var lastPos = 0;
    var i = 0;
    var retCSS = '';
  
    function addNewAttr () {
      // 如果没有正常的闭合圆括号，则直接忽略当前属性
      if (!isParenthesisOpen) {
        var source = _.trim(css.slice(lastPos, i));
        var j = source.indexOf(':');
        if (j !== -1) {
          var name = _.trim(source.slice(0, j));
          var value = _.trim(source.slice(j + 1));
          // 必须有属性名称
          if (name) {
            var ret = onAttr(lastPos, retCSS.length, name, value, source);
            if (ret) retCSS += ret + '; ';
          }
        }
      }
      lastPos = i + 1;
    }
  
    for (; i < cssLength; i++) {
      var c = css[i];
      if (c === '/' && css[i + 1] === '*') {
        // 备注开始
        var j = css.indexOf('*/', i + 2);
        // 如果没有正常的备注结束，则后面的部分全部跳过
        if (j === -1) break;
        // 直接将当前位置调到备注结尾，并且初始化状态
        i = j + 1;
        lastPos = i + 1;
        isParenthesisOpen = false;
      } else if (c === '(') {
        isParenthesisOpen = true;
      } else if (c === ')') {
        isParenthesisOpen = false;
      } else if (c === ';') {
        if (isParenthesisOpen) {
          // 在圆括号里面，忽略
        } else {
          addNewAttr();
        }
      } else if (c === '\n') {
        addNewAttr();
      }
    }
  
    return _.trim(retCSS);
  }
  
  module.exports = parseStyle;
  
  },{"./util":10}],10:[function(require,module,exports){
  module.exports = {
    indexOf: function (arr, item) {
      var i, j;
      if (Array.prototype.indexOf) {
        return arr.indexOf(item);
      }
      for (i = 0, j = arr.length; i < j; i++) {
        if (arr[i] === item) {
          return i;
        }
      }
      return -1;
    },
    forEach: function (arr, fn, scope) {
      var i, j;
      if (Array.prototype.forEach) {
        return arr.forEach(fn, scope);
      }
      for (i = 0, j = arr.length; i < j; i++) {
        fn.call(scope, arr[i], i, arr);
      }
    },
    trim: function (str) {
      if (String.prototype.trim) {
        return str.trim();
      }
      return str.replace(/(^\s*)|(\s*$)/g, '');
    },
    trimRight: function (str) {
      if (String.prototype.trimRight) {
        return str.trimRight();
      }
      return str.replace(/(\s*$)/g, '');
    }
  };
  
  },{}]},{},[2]);